6 citations · 14 across the 7 of their papers we have counts for
9 papers
Tree Lattices and the Neumann-Zagier conjecture
Joshua Evan Greene, Ahmad Issa, Duncan McCoy
A tree with integer weights on its vertices presents an integral lattice called a tree lattice. We prove that if a tree lattice is positive definite, then one of the vertex element…
Equivariantly slicing strongly negative amphichiral knots
Keegan Boyle, Ahmad Issa
We prove obstructions to a strongly negative amphichiral knot bounding an equivariant slice disk in the 4-ball using the determinant, Spinc-structures and Donaldson's theorem. Of t…
Equivariant 4-genera of strongly invertible and periodic knots
Keegan Boyle, Ahmad Issa
We study the equivariant genera of strongly invertible and periodic knots. Our techniques include some new strongly invertible concordance group invariants, Donaldson's theorem, an…
Links all of whose cyclic branched covers are L-spaces
Ahmad Issa, Hannah Turner
We show that for the pretzel knots , the -fold cyclic branched covers are L-spaces for all . In addition, we show that the knots with …
Smoothly embedding Seifert fibered spaces in
Ahmad Issa, Duncan McCoy
Using an obstruction based on Donaldson's theorem, we derive strong restrictions on when a Seifert fibered space over an orient…
The realization problem for non-integer Seifert fibered surgeries
Ahmad Issa, Duncan McCoy
Conjecturally, the only knots in with non-integer surgeries producing Seifert fibered spaces are torus knots and cables of torus knots. In this paper, we make progress on the…
On Seifert fibered spaces bounding definite manifolds
Ahmad Issa, Duncan McCoy
We establish an inequality which gives strong restrictions on when the standard definite plumbing intersection lattice of a Seifert fibered space over can embed into a standa…
The classification of quasi-alternating Montesinos links
Ahmad Issa
In this note, we complete the classification of quasi-alternating Montesinos links. We show that the quasi-alternating Montesinos links are precisely those identified independently…
Non-geometric veering triangulations
Craig D. Hodgson, Ahmad Issa, Henry Segerman
Recently, Ian Agol introduced a class of "veering" ideal triangulations for mapping tori of pseudo-Anosov homeomorphisms of surfaces punctured along the singular points. These tria…